I have a 02 Tahoe LTZ. Almost every time when I am attempting to stop the ABS kicks in and pulsates the break pedal. It only kicks in when breaking and my speed is less than 5 miles per hour. It only kicks in when I am almost at a complete stop. I have factory wheels/tires on the truck. The ABS kicks in despite the weather and road conditions. Has anyone experienced this, what would be the cause of this? Thanks...